The PlayStation Vita comes pre-loaded with a suite of minigames, under the delightfully Japanese heading of "Welcome Park." Each of the five games is designed to give users practice with one of the Vita's interface methods: the touchscreen (and touch panel), the mic, the camera, and the gyroscope/accelerometer.
I get the feeling they were designed not only to enable practice, but to familiarize users with the fact that these interfaces exist. They're even suggested to you in a particular order. Something about tapping numbers in sequence as my first Vita experience made me feel that just maybe Sony doesn't have the most confidence in its users.